baboonage
When a woman's snatch gets super puffy and swollen from getting turned on, especially if you're looking at it from behind like a total creep.
My cousin's vagina looked like a water balloon at the end of a hot summer day.
She was so worked up, it looked like her vulva was about to pop out of her pants.
He saw her from behind and said, 'Damn, that’s a full-blown baboonage.'